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Effect of Center Frequency Deviation in Miniaturized CMOS Bandpass Filter

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Journal of Korean Navigation and Port Reserch (한국항해항만학회지)
한국항해항만학회 (Korean Institute of Navigation and Port Research)
초록

In this letter, the effect of quality factor on center frequency deviation in miniaturized coupled line bandpass filter (BPF) with diagonally end-shorted at their opposite sides and lumped capacitors is theoretically analyzed. The miniaturized BPF of a two-stage structure with two types of quality factors in standard CMOS process was designed and manufactured at 5.5 GHz. The die area of BPF was 1.44×0.41 mm2. The measured center frequency of BPF with a quality factor of 4.9 was deviated from 5.5 GHz to 4.7 GHz. The one with 14.8 was shifted to 5GHz. The theoretical and measured results validate that quality factor influences the center frequency shift of BPF.

저자
  • In-Ho Kang
  • Shang-Ming Li
  • Xin Guan